High severity · published Nov 6, 2020
CVE-2017-18926
raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to…
7.1
CVSS
3.1%
EPSS
No
On KEV
Description
raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to heap-based buffer overflows (sometimes seen in raptor_qname_format_as_xml).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FE
Fedora · Fedoraproject
31; 32; 33 · source: NVD
RR
Raptor Rdf Syntax Library · Librdf
2.0.15 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18926
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18926
Mailing List
http://www.openwall.com/lists/oss-security/2020/11/13/1
Mailing List
http://www.openwall.com/lists/oss-security/2020/11/13/2
Mailing List
http://www.openwall.com/lists/oss-security/2020/11/14/2
Mailing List
http://www.openwall.com/lists/oss-security/2020/11/16/2
Mailing List
http://www.openwall.com/lists/oss-security/2020/11/16/3
Patch
https://github.com/LibreOffice/core/blob/master/external/redland/raptor/0001-Calcualte-max-nspace-declarations-correctly-for-XML-.patch.1
More from Debian Linux
10.0
CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2026-111497
Out-of-Bounds Write in Google Brotli Decoder